Many people still stay in the reed switch float switch, the understanding of the float switch, but because this is a mechanical product after all, the overall appearance of the appearance is poor, can not touch, the force is easy to damage, the performance is unstable and difficult to clean, etc. The weakness makes it very limited. Technology is developing, society is developing, and a defective product can't be improved for a long time. Just like the previous "big brother" was replaced by a functional mobile phone (commonly known as the old man machine), the function phone was replaced by a smart phone; the match was fired. The machine replaces the same.
The choice of liquid level detection is not limited to the above two examples, there is also a photoelectric level switch, in contrast, the photoelectric level sensor is more in line with market demand.
What is the difference between the two, the biggest difference is that the float switch is a mechanical product, and the photoelectric liquid level switch is an electronic product.
The photoelectric liquid level switch is small in size and compact in structure, so the space required for installation is small and the installation process is simple. The existing float type liquid level switch has a large volume, a loose structure, a large space required for installation, and a complicated design and installation.
The float type liquid level switch pushes the float of the magnet up and down by the buoyancy of the liquid, so that the internal reed switch is opened and closed, so the float has a certain water level.

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